Photodetector User Lidar Remote Sensing, Laser Based Remote Sensing, Lidar/Ladar, Flying Spot and Flash Airborne Ladar, 3D Imaging with Flash Ladar, Exo tropospheric Ladar Imaging, High Efficiency Laser Development at NGAS, Single Photon NIR Sensor Array Development, MIT/LL NIR Geiger Mode APDs, Intevac Intensified Photodiode (IPD), Voxtel Impact Ionization Engineered APDs, RVS Single Photon, Linear Mode HgCdTe APD, MBE Based HgCdTe APDs and 3D LADAR Sensors, High Performance HgCdTe APDs.